CVE-2026-40411

CRITICAL

Azure Virtual Network Gateway Remote Code Execution Vulnerability

Title source: cna
STIX 2.1

Description

Improper input validation in Azure Virtual Network Gateway allows an authorized attacker to execute code over a network.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Azure Virtual Network Gateway Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40411

Scores

CVSS v3 9.9
EPSS 0.0053
EPSS Percentile 40.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-20
Status published
Products (2)
Microsoft/Azure Virtual Network Gateway -
microsoft/azure_virtual_network_gateway
Published May 22, 2026
Tracked Since May 23, 2026